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The following sums of money have been placed at the disposal 
of the Society to be given as prizes for the encouragement of micro- 
scopical research, and to be awarded by the Executive Committee 
upon the conditions of last year, as hereinafter stated. It is very 
desirable that teachers and advanced students in biology should 
avail themselves of this liberal offer, which secured for the Society 
last year some of the best biological papers we have had, and which 
are important contributions to our scientific literature. It is under- 
stood that the committee reserve the right to refuse awards if the 
papers presented are of insufficient merit. The competition is open 
to all members of the Society and to those who make application 
for membership before submitting their work to the committee. 
Twenty-five separates of each paper are furnished to the author by 
the Society, and additional copies will be supplied at the cost of 
printing, if notified of the number desired when proof is read. 

The prizes offered and the conditions are as follows : 

Two prizes of fifty dollars each. 
Two prizes of thirty dollars each. 
Two prizes of twenty-five dollars each. 
Two prizes of fifteen dollars each. 

Sec. i. One prize of fifty dollars is offered for the best paper which 
shall give the results of an original investigation relating to animal 
life, made with the microscope. The paper is to be not less than 
3,000 words in length, exclusive of bibliography and explanation 
of figures. It is to be illustrated by original drawings and accom- 
panied by not less than ten microscopical preparations on which 
the conclusions are based. The methods employed are to be given 
in full ; also a brief summary of the main facts and conclusions, 
and finally as complete a bibliography as possible. 

Sec 2. One prize of fifty dollars is offered for the best paper 
giving the results of an original investigation made with the micro- 
scope and relating to plant life. 
19 in 


Secs. 3, 4. Two prizes of twenty-five dollars each are offered for 
the second best papers in animal and plant life respectively. 

The conditions for sections 2, 3, and 4 are the same as for 
section 1. 

Sec. 5. One prize of thirty dollars is offered for the best six photo- 
micrographs on some subject in animal or plant histology, whose 
structural features are to be illustrated by the photomicrograph. 
There are to be six different negatives, two of 50, two of 150, and 
two of 500 diameters. The negatives are to be made with trans- 
mitted light, wholly untouched, and the prints are to be made on 
albumen or aristotype paper. The negatives must be submitted 
with the photomicrographs, and also the specimens from which the 
pictures were made. Give methods in full. 

Sec. 6. One prize of thirty dollars is offered for the best collec- 
tion of six mounted slides illustrating some one biological subject. 
The specimens must be accompanied with a full account of the 
method of preparation. 

Secs. 7, 8. Two prizes of fifteen dollars each for the second best 
collection of photomicrographs and preparations. Conditions 
same as in sections 5 and 6. 

General Conditions. 

(a) All papers and descriptions of methods are to be type- 

(8) All papers, photomicrographs, and slides entered for com- 
petition are to be submitted to the committee on or before the 
15th of July, 1893.* (Send addressed to the Secretary, Wm. H. 
Seaman, 1424 nth street, Washington, D. C.) 

(/) Each paper, slide, negative, and drawing or photomicro- 
graph is to be marked with some design or 110m de plume (in no 
case by the writer's name or initials). There should be sent with 
each package, also, the contributor's name in a sealed envelope, 
the outside of the envelope bearing the design or nom de plume of 
the contributor. 

(</) The above prizes are offered for original contributions. 
Work previously published is not eligible. 

* Investigation upon bacteria will in each case fall under the headings 
relating to plant life. 


(e) The papers winning the prizes are to appear, with their illus- 
trations, in the Proceedings of the Society. Unsuccessful papers 
will be governed by the same rules as to presentation and publica- 
tion as the other papers submitted to the Society. (See By-laws.) 

(/) Photomicrographs and mounted preparations for which 
prizes are given are to become the property of the Society. 

(g) Slides illustrating papers and negatives of photomicrographs 
(Sections 1-4, 5, 7) will be returned to their owners. 

(A) All papers, negatives, photomicrographs, and slides of unsuc- 
cessful competitors will be returned to the owners if desired. 

(/) The successful competitors will be announced at the meeting. 

NOTE 2. — Those somewhat unfamiliar with the proper presentation of 
original investigation are advised to study carefully the method of pres- 
entation as given in the Proceedings and in scientific journals, of which 
the Journal of Morphology is one of the best examples. 

NOTE 3. — Any person interested in microscopical science may become 
a member of the American Microscopical Society upon recommendation 
in writing of two members, nomination by the Executive Committee, 
and election by the majority of the members present at any regular ses- 
sion of the Society. 

Where an applicant is not acquainted with any member of the Society 
a recommendation by two or more physicians, teachers, or other pro- 
fessional men who are personally acquainted with the applicant will 
receive consideration by the Executive Committee. 

Wm. H. Seaman, Secretary. 

Under the present arrangement, with respect to the next place of 
meeting, it cannot yet be decided, but it will probably be in some 
place not far from New York city. 


President : Lester Curtis, M. D., . . Chicago, 111. 

Vice-Presidents: Prof. W. W. Rowi,ee, . Ithaca, N. Y. 

Prof. W. S. Muxkr, . Madison, Wis. 

Secretary: Wm. H. Seaman, M. D., . . Washington, D. C. 

Treasurer: Chas. C. Meiaor, .... Pittsburgh, Pa. 

Elective Members of the Executive Committee. 

Lyman Deck, M. D., Salamanca, N. Y. 

V. A. Moors, M. D., Washington, D. C. 

Prof. T. D. Biscoe, Marietta, Ohio. 

Contributors are advised to underscore all specific names in their 
essays, and to prepare their drawings with india-ink on Bristol board, 
and somewhat larger than the finished plate, which, if full page, should 
be 10 by 18 centimeters or in that proportion, and on which letters of 
reference should appear 2 to 3 millimeters in length. By reducing a 
larger drawing, more perfect and finer work is obtained, but no more 
lines need be put 011 it than if made the exact size. The Secretary will 
gladly give any information desired, and will receive pencil sketches 
from those unacquainted with drawing, the object being to secure good 
illustrations at the least expense. 


Parasitism of Epiphcgus Virginiana. Hermann Schrenk 91 

The Effect of Dilute Solutions of Chromic Acid and Acid Urine 

upon the red blood Corpuscles of Man. M. L- Holbrook, M. D. . . 129 
Sarcina ventnculi in Medico-Legal Investigation of Blood Stains. . 136 
Prizes for 1894 139